#ifndef SCM_GC_H
#define SCM_GC_H
-/* Copyright (C) 1995,1996,1998,1999,2000,2001, 2002, 2003, 2004 Free Software Foundation, Inc.
+/* Copyright (C) 1995,1996,1998,1999,2000,2001, 2002, 2003, 2004, 2006, 2007, 2008 Free Software Foundation, Inc.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
\f
#include "libguile/threads.h"
\f
-
typedef struct scm_t_cell
{
SCM word_0;
SCM word_1;
} scm_t_cell;
-/*
- CARDS
-
- A card is a small `page' of memory; it will be the unit for lazy
- sweeping, generations, etc. The first cell of a card contains a
- pointer to the mark bitvector, so that we can find the bitvector
- efficiently: we knock off some lowerorder bits.
-
- The size on a 32 bit machine is 256 cells = 2kb. The card [XXX]
-*/
-
-
-
/* Cray machines have pointers that are incremented once for each
* word, rather than each byte, the 3 most significant bits encode the
* byte within the word. The following macros deal with this by
#endif /* def _UNICOS */
-#define SCM_GC_CARD_N_HEADER_CELLS 1
-#define SCM_GC_CARD_N_CELLS 256
-#define SCM_GC_SIZEOF_CARD SCM_GC_CARD_N_CELLS * sizeof (scm_t_cell)
-
-#define SCM_GC_CARD_BVEC(card) ((scm_t_c_bvec_long *) ((card)->word_0))
-#define SCM_GC_SET_CARD_BVEC(card, bvec) \
- ((card)->word_0 = (SCM) (bvec))
-#define SCM_GC_GET_CARD_FLAGS(card) ((long) ((card)->word_1))
-#define SCM_GC_SET_CARD_FLAGS(card, flags) \
- ((card)->word_1 = (SCM) (flags))
-
-#define SCM_GC_GET_CARD_FLAG(card, shift) \
- (SCM_GC_GET_CARD_FLAGS (card) & (1L << (shift)))
-#define SCM_GC_SET_CARD_FLAG(card, shift) \
- (SCM_GC_SET_CARD_FLAGS (card, SCM_GC_GET_CARD_FLAGS(card) | (1L << (shift))))
-#define SCM_GC_CLEAR_CARD_FLAG(card, shift) \
- (SCM_GC_SET_CARD_FLAGS (card, SCM_GC_GET_CARD_FLAGS(card) & ~(1L << (shift))))
-
-/*
- Remove card flags. They hamper lazy initialization, and aren't used
- anyways.
- */
-
-/* card addressing. for efficiency, cards are *always* aligned to
- SCM_GC_CARD_SIZE. */
-
-#define SCM_GC_CARD_SIZE_MASK (SCM_GC_SIZEOF_CARD-1)
-#define SCM_GC_CARD_ADDR_MASK (~SCM_GC_CARD_SIZE_MASK)
-
-#define SCM_GC_CELL_CARD(x) ((scm_t_cell *) ((long) (x) & SCM_GC_CARD_ADDR_MASK))
-#define SCM_GC_CELL_OFFSET(x) (((long) (x) & SCM_GC_CARD_SIZE_MASK) >> SCM_CELL_SIZE_SHIFT)
-#define SCM_GC_CELL_BVEC(x) SCM_GC_CARD_BVEC (SCM_GC_CELL_CARD (x))
-#define SCM_GC_SET_CELL_BVEC(x, bvec) SCM_GC_SET_CARD_BVEC (SCM_GC_CELL_CARD (x), bvec)
-#define SCM_GC_CELL_GET_BIT(x) SCM_C_BVEC_GET (SCM_GC_CELL_BVEC (x), SCM_GC_CELL_OFFSET (x))
-#define SCM_GC_CELL_SET_BIT(x) SCM_C_BVEC_SET (SCM_GC_CELL_BVEC (x), SCM_GC_CELL_OFFSET (x))
-#define SCM_GC_CELL_CLEAR_BIT(x) SCM_C_BVEC_CLEAR (SCM_GC_CELL_BVEC (x), SCM_GC_CELL_OFFSET (x))
-
-#define SCM_GC_CARD_UP(x) SCM_GC_CELL_CARD ((char *) (x) + SCM_GC_SIZEOF_CARD - 1)
-#define SCM_GC_CARD_DOWN SCM_GC_CELL_CARD
-
-/* low level bit banging aids */
-typedef unsigned long scm_t_c_bvec_long;
-
-#if (SCM_SIZEOF_UNSIGNED_LONG == 8)
-# define SCM_C_BVEC_LONG_BITS 64
-# define SCM_C_BVEC_OFFSET_SHIFT 6
-# define SCM_C_BVEC_POS_MASK 63
-# define SCM_CELL_SIZE_SHIFT 4
-#else
-# define SCM_C_BVEC_LONG_BITS 32
-# define SCM_C_BVEC_OFFSET_SHIFT 5
-# define SCM_C_BVEC_POS_MASK 31
-# define SCM_CELL_SIZE_SHIFT 3
-#endif
-
-#define SCM_C_BVEC_OFFSET(pos) (pos >> SCM_C_BVEC_OFFSET_SHIFT)
-
-#define SCM_C_BVEC_GET(bvec, pos) (bvec[SCM_C_BVEC_OFFSET (pos)] & (1L << (pos & SCM_C_BVEC_POS_MASK)))
-#define SCM_C_BVEC_SET(bvec, pos) (bvec[SCM_C_BVEC_OFFSET (pos)] |= (1L << (pos & SCM_C_BVEC_POS_MASK)))
-#define SCM_C_BVEC_CLEAR(bvec, pos) (bvec[SCM_C_BVEC_OFFSET (pos)] &= ~(1L << (pos & SCM_C_BVEC_POS_MASK)))
-
-/* testing and changing GC marks */
-#define SCM_GC_MARK_P(x) SCM_GC_CELL_GET_BIT (x)
-#define SCM_SET_GC_MARK(x) SCM_GC_CELL_SET_BIT (x)
-#define SCM_CLEAR_GC_MARK(x) SCM_GC_CELL_CLEAR_BIT (x)
/* Low level cell data accessing macros. These macros should only be used
* from within code related to garbage collection issues, since they will
#define SCM_SET_CELL_OBJECT_2(x, v) SCM_SET_CELL_OBJECT ((x), 2, (v))
#define SCM_SET_CELL_OBJECT_3(x, v) SCM_SET_CELL_OBJECT ((x), 3, (v))
+#define SCM_CELL_OBJECT_LOC(x, n) (SCM_VALIDATE_CELL((x), &SCM_GC_CELL_OBJECT ((x), (n))))
+#define SCM_CARLOC(x) (SCM_CELL_OBJECT_LOC ((x), 0))
+#define SCM_CDRLOC(x) (SCM_CELL_OBJECT_LOC ((x), 1))
+
#define SCM_CELL_TYPE(x) SCM_CELL_WORD_0 (x)
#define SCM_SET_CELL_TYPE(x, t) SCM_SET_CELL_WORD_0 ((x), (t))
* the freelist. Due to this structure, freelist cells are not cons cells
* and thus may not be accessed using SCM_CAR and SCM_CDR. */
-/*
- SCM_FREECELL_P removed ; the semantics are ambiguous with lazy
- sweeping. Could mean "this cell is no longer in use (will be swept)"
- or "this cell has just been swept, and is not yet in use".
- */
-
-#define SCM_FREECELL_P this_macro_has_been_removed_see_gc_header_file
-
#define SCM_FREE_CELL_CDR(x) \
(SCM_GC_CELL_OBJECT ((x), 1))
#define SCM_SET_FREE_CELL_CDR(x, v) \
(SCM_GC_SET_CELL_OBJECT ((x), 1, (v)))
-
-#define SCM_CELL_OBJECT_LOC(x, n) (SCM_VALIDATE_CELL((x), &SCM_GC_CELL_OBJECT ((x), (n))))
-#define SCM_CARLOC(x) (SCM_CELL_OBJECT_LOC ((x), 0))
-#define SCM_CDRLOC(x) (SCM_CELL_OBJECT_LOC ((x), 1))
-
-
-
-
#if (SCM_DEBUG_CELL_ACCESSES == 1)
/* Set this to != 0 if every cell that is accessed shall be checked:
*/
void scm_i_expensive_validation_check (SCM cell);
#endif
-SCM_API scm_i_pthread_mutex_t scm_i_gc_admin_mutex;
+SCM_INTERNAL scm_i_pthread_mutex_t scm_i_gc_admin_mutex;
+
+#define scm_gc_running_p 0
+SCM_INTERNAL scm_i_pthread_mutex_t scm_i_sweep_mutex;
+
+#ifdef __ia64__
+void *scm_ia64_register_backing_store_base (void);
+void *scm_ia64_ar_bsp (const void *);
+#endif
-SCM_API int scm_block_gc;
-SCM_API int scm_gc_heap_lock;
-SCM_API unsigned int scm_gc_running_p;
-SCM_API scm_i_pthread_mutex_t scm_i_sweep_mutex;
\f
#if (SCM_ENABLE_DEPRECATED == 1)
#define SCM_SET_FREELIST_LOC(key,ptr) scm_i_pthread_setspecific ((key), (ptr))
#define SCM_FREELIST_LOC(key) ((SCM *) scm_i_pthread_getspecific (key))
-SCM_API scm_i_pthread_key_t scm_i_freelist;
-SCM_API scm_i_pthread_key_t scm_i_freelist2;
SCM_API struct scm_t_cell_type_statistics scm_i_master_freelist;
SCM_API struct scm_t_cell_type_statistics scm_i_master_freelist2;
-
-SCM_API unsigned long scm_gc_cells_swept;
-SCM_API unsigned long scm_gc_cells_collected;
-SCM_API unsigned long scm_gc_malloc_collected;
-SCM_API unsigned long scm_gc_ports_collected;
-SCM_API unsigned long scm_cells_allocated;
-SCM_API int scm_gc_cell_yield_percentage;
-SCM_API int scm_gc_malloc_yield_percentage;
SCM_API unsigned long scm_mallocated;
+SCM_API unsigned long scm_gc_ports_collected;
SCM_API unsigned long scm_mtrigger;
-
-
SCM_API SCM scm_after_gc_hook;
SCM_API scm_t_c_hook scm_before_gc_c_hook;
SCM_API SCM scm_object_address (SCM obj);
+SCM_API SCM scm_gc_enable (void);
+SCM_API SCM scm_gc_disable (void);
+SCM_API SCM scm_gc_dump (void);
SCM_API SCM scm_gc_stats (void);
SCM_API SCM scm_gc_live_object_stats (void);
SCM_API SCM scm_gc (void);
-SCM_API void scm_gc_for_alloc (struct scm_t_cell_type_statistics *freelist);
-SCM_API SCM scm_gc_for_newcell (struct scm_t_cell_type_statistics *master, SCM *freelist);
-SCM_API void scm_igc (const char *what);
+SCM_API void scm_i_gc (const char *what);
SCM_API void scm_gc_mark (SCM p);
-SCM_API void scm_gc_mark_dependencies (SCM p);
-SCM_API void scm_mark_locations (SCM_STACKITEM x[], unsigned long n);
SCM_API int scm_in_heap_p (SCM value);
SCM_API void scm_gc_sweep (void);
const char *what);
SCM_API void scm_gc_unregister_collectable_memory (void *mem, size_t size,
const char *what);
+SCM_API void *scm_gc_malloc_pointerless (size_t size, const char *what);
SCM_API void *scm_gc_calloc (size_t size, const char *what);
SCM_API void *scm_gc_malloc (size_t size, const char *what);
SCM_API void *scm_gc_realloc (void *mem, size_t old_size,
SCM_API void scm_gc_unregister_roots (SCM *b, unsigned long n);
SCM_API void scm_storage_prehistory (void);
SCM_API int scm_init_storage (void);
-SCM_API void *scm_get_stack_base (void);
SCM_API void scm_init_gc (void);
#if SCM_ENABLE_DEPRECATED == 1
HCoop / bpt / guile.git / blobdiff